Alphabetise AcceleratorController::PerformAction()

This CL:
- Alphabetises the switch statement in AcceleratorController::PerformAction()
- Removes "default" from switch statement in
  AcceleratorController::PerformAction()
- Makes several methods in AcceleratorController take AcceleratorAction instead
  of int as input
- Rearranges methods in accelerator_controller.cc to match order in .h file

BUG=404473
TEST=None
R=oshima
TBR=sky (For trivial addition of ifdef to chrome/browser/ui/views/accelerator_table.cc)

Committed: https://crrev.com/df99bbce19ea94a0b6507f8d5a6a58d60b463741
Cr-Commit-Position: refs/heads/master@{#305066}

[pkotwicz, 2014-11-17 16:01:29]

Patchset #1 (id:1) has been deleted

[pkotwicz, 2014-11-17 16:05:32]

pkotwicz@chromium.org changed reviewers:
+ oshima@chromium.org

[pkotwicz, 2014-11-17 16:05:43]

Oshima, PTAL

[pkotwicz, 2014-11-19 20:35:51]

Ping?

[pkotwicz, 2014-11-19 20:35:57]

Patchset #1 (id:20001) has been deleted

[pkotwicz, 2014-11-19 20:36:03]

Patchset #1 (id:40001) has been deleted

[oshima, 2014-11-19 20:57:34]

hmm, I thought I lgtm'ed yesterday.

lgtm

[pkotwicz, 2014-11-20 16:25:58]

The CQ bit was checked by pkotwicz@chromium.org

[commit-bot: I haz the power, 2014-11-20 16:27:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/729993002/80001

[commit-bot: I haz the power, 2014-11-20 16:31:55]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-11-20 16:31:56]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[pkotwicz, 2014-11-20 18:46:35]

The CQ bit was checked by pkotwicz@chromium.org

[commit-bot: I haz the power, 2014-11-20 18:48:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/729993002/100001

[commit-bot: I haz the power, 2014-11-20 19:48:11]

Committed patchset #3 (id:100001)

[commit-bot: I haz the power, 2014-11-20 19:48:58]

Patchset 3 (id:??) landed as
https://crrev.com/df99bbce19ea94a0b6507f8d5a6a58d60b463741
Cr-Commit-Position: refs/heads/master@{#305066}